Search Publications
Starbursts in and out of the star-formation main sequence
Daddi, E.; Elbaz, D.; Franco, M. +13 more
Aims: We use high-resolution continuum images obtained with the Atacama Large Millimeter Array (ALMA) to probe the surface density of star formation in z ~ 2 galaxies and study the different physical properties between galaxies within and above the star-formation main sequence of galaxies.
Methods: We use ALMA images at 870 µm with…
Orbital properties of binary post-AGB stars
Manick, Rajeev; Van Winckel, Hans; Kamath, Devika +5 more
Binary post-asymptotic giant branch (post-AGB) stars are thought to be the products of a strong but poorly understood interaction during the AGB phase. The aim of this contribution is to update the orbital elements of a sample of galactic post-AGB binaries observed in a long-term radial-velocity monitoring campaign by analysing these systems in a …
The second-closest gamma-ray burst: sub-luminous GRB 111005A with no supernova in a super-solar metallicity environment
Gentile, Gianfranco; Paragi, Zsolt; Fynbo, Johan P. U. +17 more
We report the detection of the radio afterglow of a long gamma-ray burst (GRB) 111005A at 5-345 GHz, including very long baseline interferometry observations with a positional error of 0.2 mas. The afterglow position is coincident with the disc of a galaxy ESO 58049 at z = 0.01326 (∼1″ from its centre), which makes GRB 111005A the second-closest G…
The AKARI IRC asteroid flux catalogue: updated diameters and albedos
Müller, T. G.; Usui, F.; Alí-Lagoa, V. +1 more
The AKARI IRC all-sky survey provided more than twenty thousand thermal infrared observations of over five thousand asteroids. Diameters and albedos were obtained by fitting an empirically calibrated version of the standard thermal model to these data. After the publication of the flux catalogue in October 2016, our aim here is to present the AKAR…
Extreme submillimetre starburst galaxies
Rowan-Robinson, M.; Clements, David L.; Pearson, William J. +6 more
We have used two catalogues, a Herschel catalogue selected at 500 µm (HerMES) and an IRAS catalogue selected at 60 µm (RIFSCz), to contrast the sky at these two wavelengths. Both surveys demonstrate the existence of "extreme" starbursts, with star-formation rates (SFRs) > 5000 M⊙ yr-1. The maximum intrinsic sta…
Photometric survey, modelling, and scaling of long-period and low-amplitude asteroids
Geier, S.; Siwak, M.; Cikota, A. +40 more
Context. The available set of spin and shape modelled asteroids is strongly biased against slowly rotating targets and those with low lightcurve amplitudes. This is due to the observing selection effects. As a consequence, the current picture of asteroid spin axis distribution, rotation rates, radiometric properties, or aspects related to the obje…
Asteroid models reconstructed from the Lowell Photometric Database and WISE data
Alí-Lagoa, V.; Hanuš, J.; Ďurech, J.
Context. Information about the spin state of asteroids is important for our understanding of the dynamical processes affecting them. However, spin properties of asteroids are known for only a small fraction of the whole population.
Aims: To enlarge the sample of asteroids with a known rotation state and basic shape properties, we combined spa…
A spectroscopic survey of the youngest field stars in the solar neighborhood . II. The optically faint sample
Montes, D.; Gandolfi, D.; Guillout, P. +5 more
Context. Star formation in the solar neighborhood is mainly traced by young stars in open clusters, associations, and in the field, which can be identified, for example, by their X-ray emission. The determination of stellar parameters for the optical counterparts of X-ray sources is crucial for a full characterization of these stars.
Aims: Th…
XMMPZCAT: A catalogue of photometric redshifts for X-ray sources
Georgantopoulos, I.; Mountrichas, G.; Corral, A. +1 more
Aims: The third version of the XMM-Newton serendipitous catalogue (3XMM), containing almost half million sources, is now the largest X-ray catalogue. However, its full scientific potential remains untapped due to the lack of distance information (i.e. redshifts) for the majority of its sources. Here we present XMMPZCAT, a catalogue of photome…
First scattered light detection of a nearly edge-on transition disk around the T Tauri star RY Lupi
Pinte, C.; Avenhaus, H.; Henning, T. +41 more
Context. Transition disks are considered sites of ongoing planet formation, and their dust and gas distributions could be signposts of embedded planets. The transition disk around the T Tauri star RY Lup has an inner dust cavity and displays a strong silicate emission feature.
Aims: Using high-resolution imaging we study the disk geometry, in…